There have been several fixes on the release/2.28/master branch. In
particular https://sourceware.org/bugzilla/show_bug.cgi?id=24476 at
the moment causes a lot of false positives when using valgrind on
applications that don't use dlopen() (postgres in my case). But a few
of the other changes since the last upstream merge also seem worth
pulling in.
Regards,
Andres Freund